feat: Add support for compiling NetBSD & OpenBSD

[craciunoiuc]

Prerequisite checklist

• Read the contribution guidelines regarding submitting new changes to the project;
• Tested your changes against relevant architectures and platforms;
• Ran make fmt on your commit series before opening this PR;
• Updated relevant documentation.

Description of changes

Similar to the FreeBSD PR #603 this adds support for OpenBSD and NetBSD.

Unfortunately, right now, because of a dependency bug in containerd this fails to compile. The fix seems simple, but it is up to them to fix right now. The errors are like following.

For OpenBSD:

# github.com/containerd/containerd/archive
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/archive/tar_mostunix.go:35:14: undefined: unix.Lsetxattr
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/archive/tar_mostunix.go:35:47: undefined: unix.XATTR_CREATE
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/archive/tar_mostunix.go:36:40: undefined: unix.ENODATA
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/archive/tar_unix.go:139:14: undefined: unix.Lsetxattr

For NetBSD:

# github.com/containerd/containerd/archive
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/archive/tar_mostunix.go:35:47: undefined: unix.XATTR_CREATE
# github.com/containerd/containerd/mount
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/mount/mount.go:62:13: undefined: UnmountAll
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/mount/mount.go:88:11: m.mount undefined (type *Mount has no field or method mount, but does have Mount)
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/mount/mount_unix.go:54:13: undefined: UnmountAll
/go/pkg/mod/github.com/containerd/containerd@v1.7.2/mount/temp_unix.go:53:13: undefined: UnmountAll

As such, we mark this as Draft until it is ready.

[craciunoiuc]

Update: I think NetBSD works now but I would keep this PR together

../go/pkg/mod/github.com/containerd/containerd@v1.7.17/archive/tar_mostunix.go:35:14: undefined: unix.Lsetxattr
../go/pkg/mod/github.com/containerd/containerd@v1.7.17/archive/tar_mostunix.go:35:47: undefined: unix.XATTR_CREATE
../go/pkg/mod/github.com/containerd/containerd@v1.7.17/archive/tar_mostunix.go:36:40: undefined: unix.ENODATA
../go/pkg/mod/github.com/containerd/containerd@v1.7.17/archive/tar_unix.go:139:14: undefined: unix.Lsetxattr
# github.com/containers/storage/pkg/system
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/system/rm.go:85:7: undefined: IsEBUSY
# github.com/containers/storage/pkg/lockfile
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:87:5: undefined: fileHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:108:9: cannot use GetLockFile(path) (value of type *LockFile) as Locker value in return statement: *LockFile does not implement Locker (missing method TouchedSince)
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:124:9: cannot use GetROLockFile(path) (value of type *LockFile) as Locker value in return statement: *LockFile does not implement Locker (missing method TouchedSince)
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:163:3: undefined: unlockAndCloseHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:224:22: l.GetLastWrite undefined (type *LockFile has no field or method GetLastWrite)
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:259:15: l.RecordWrite undefined (type *LockFile has no field or method RecordWrite)
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:334:2: undefined: unlockAndCloseHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:359:41: undefined: fileHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:366:12: undefined: openHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:404:3: undefined: lockHandle
../go/pkg/mod/github.com/containers/storage@v1.53.0/pkg/lockfile/lockfile.go:404:3: too many errors
# github.com/tonistiigi/fsutil
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/diskwriter.go:126:63: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/filter.go:321:67: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/filter.go:349:69: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/followlinks.go:125:68: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/fs.go:147:75: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/hardlinks.go:35:63: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/hardlinks.go:83:67: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/send.go:161:67: undefined: syscall.EBADMSG
../go/pkg/mod/github.com/tonistiigi/fsutil@v0.0.0-20240424095704-91a3fc46842c/tarwriter.go:29:67: undefined: syscall.EBADMSG
# kraftkit.sh/machine/network
machine/network/service.go:31:9: undefined: defaultStrategyName